Final answer:
When cells restore their differentiated state and produce their usual products, it means they have returned to their specialized functions. Differentiation is the process by which unspecialized cells become specialized to carry out distinct functions. During differentiation, cells undergo major changes in size, shape, metabolism, and overall function.
Step-by-step explanation:
When the differentiated state of cells is restored and they produce their usual products, it means that the cells have returned to their specialized functions. This occurs when cells undergo differentiation, a process where unspecialized cells become specialized to carry out distinct functions. Differentiation involves major changes in a cell's size, shape, metabolism, and overall function. Each cell type in the body contains the same DNA, but only reads the portions of DNA relevant to its own function, resulting in unique genetic expression for each cell.